Di(het)arylaminothiophene derivatives

1. A 2-(N,N-di(het)arylamino) thiophene derivative of the structure

wherein:

R 1 , R 2 , R 3 , R 4 and R 5 —independently of one another—are each a monofunctional (het)aryl system, in the form of a conjugated carbocyclic or heterocyclic ring system which may also comprise identical or different ring types which are linked or fused on linearly or at angles, it being possible for the peripheral hydrogen atoms to be substituted by alkyl, alkoxy, phenoxy, dialkylamino or diphenylamino groups (alkyl=C 1 to C 6 );

R 1 may furthermore be a corresponding bifunctional (het)aryl system,

R 3 may furthermore be a group R 8 , except if R 1 is a bifunctional (het)arylene system, R 8 representing a chemical bond or a bifunctional (het)arylene system;

R 4 may furthermore denote R 10 , R 10 representing a chemical bond or a bifunctional (het)arylene system, or R 4 may be one of the following groups:

R 9 representing a chemical bond or a bifunctional (het)arylene system;

R 5 may also be H or

the following may furthermore be the case:

R 4 and R 5 together form one of the following groups:

R 4 and R 1 together form the following group:

R 4 and R 3 together form the following group:

R 5 and R 1 together form the following group:

R 5 and R 3 together form the following group:

R 5 , R 4 and R 1 together form one of the following groups:

R 5 , R 4 and R 3 together form the following group:

Y in each case denoting CH or N.

2. The thiophene derivative as claimed in claim 1 , of the following structure:

3. The thiophene derivative as claimed in claim 1 , of the following structure:

4. The thiophene derivative as claimed in claim 1 , of the following structure:

5. The thiophene derivative as claimed in claim 1 , of the following structure:

Z denoting an anion and n denoting an integer from 2 to 100.

6. A process for the preparation of a thiophene derivatives as claimed in claim 1 , characterized by the following steps:

(a) reaction of a secondary amine with an acyl halide to give a carboxamide;

(b) conversion of the carboxamide into a thiocarboxamide;

(c) reaction of the thiocarboxamide with an α-haloacyl compound to give a 2-(N,N-di(het)arylamino) thiophene deriviative.

7. The process as claimed in claim 6 , characterized in that the thiophene derivative is converted oxidatively into a dimer or polymer.

8. The process as claimed in claim 6 , characterized in that the thiophene derivative is converted by means of an orthoformic ester or nitrous acid into a polythiophene derivative.

9. An organic light-emitting diode comprising a thiophene derivative of claim 1 .

10. An organic photovoltaic component or cell comprising a thiophene derivative of claim 1 .